Your mood may be guiding your snack choices more than you realize—here’s what scientists observed.
Reviewed by Dietitian Casey Wing, RD, CD
Key Points
- Dieting is a common weight regulation strategy, but it can be difficult to maintain long-term.
- Oftentimes, factors like daily mood and emotions can affect our food choices.
- Noticing patterns between mood and food choices may help support consistent eating habits.
We’ve all crossed paths with a diet or diet trend—whether it’s trying the Whole30 diet, hearing a coworker swear by intermittent fasting or watching a family member prep keto diet meals for the week. Dieting, in one form or another, is nearly impossible to avoid.
It’s easy to understand why—these approaches often promise “quick results” when it comes to weight regulation or weight loss, and the appeal of a fast solution promising results is understandable. However, many of these plans are hard to sustain long-term, especially when real life—and real emotions—get in the way.
Think about the last time you experienced strong emotions, like stress from a tough conversation or excitement from a celebration. Did your mood influence what—or how—you ate afterward?
For many people it does, and a recent study published in Food Quality and Preference set out to explore that exact connection. The study specifically looked at how mood and emotional regulation affect eating behaviors in people who are actively dieting or restricting calories versus those who are not.
How Was the Study Conducted?
To investigate the relationship between mood, dietary restraint (the intention to restrict food intake) and emotion regulation, researchers designed the study to reflect day-to-day eating habits. Instead of providing meals in a controlled setting, participants chose their own foods, allowing researchers to observe real-world behavior.
The study focused specifically on snack intake. Previous research suggests that snacking is a useful way to capture eating behavior, as it’s usually more flexible and choices are potentially more influenced by emotions and mood than structured meals. Snack intake is also a key marker in dieting, as it can contribute to overall calorie intake and weight changes over time.
The study included 155 women between the ages of 18 and 65. The researchers focused specifically on women because previous studies have suggested that women are more likely to engage in dieting behaviors and to overeat in response to negative emotions, which made them an ideal group for understanding how mood, eating and dietary restraint interact.
Over the course of seven days, participants were asked to complete a snack food diary, in which they recorded their emotional state prior to consuming each snack. Snacks were categorized as either “healthy” (fruits, vegetables, unsalted nuts, seeds) or “unhealthy” (chocolate, cakes, sweets, chips). Researchers also used validated questionnaires to assess participants’ typical mood, emotion regulation skills and levels of dietary restraint.
What Did the Study Find?
After analyzing the seven-day intervention period, researchers found a significant interaction between mood, snack type and dietary restraint status. Notably, when participants reported a negative mood—most commonly feeling stressed or sad—those who were dieting or restricting calories consumed more unhealthy snacks compared to those who were not dieting.
In contrast, when participants were in a positive mood—such as feeling happy or excited—those who were not dieting tended to consume more snacks overall, including both healthy and unhealthy options compared to restrained eaters.
These findings suggest two key takeaways:
- Dieting may make people more vulnerable to unhealthy snacking when feeling down. Previous research suggests that negative emotions may deplete the mental resources needed for self-control, making it harder for dieters to stick to their goals and resist less nutritious foods.
- People who aren’t restricting their intake may snack more in response to positive emotions. Being in a good mood can lead to a relaxed, permissive approach to eating, which may lead to greater food intake.
How Does This Apply to Real Life?
Researchers found that both mood and dieting status can shape how—and what—we snack on. So what does that actually mean for your day-to-day habits?
Dieting may make unhealthy snacking more likely when you’re feeling down. When participants were in a negative mood, those who were actively dieting were more likely to reach for unhealthy snacks compared to those who weren’t dieting. This suggests that it may be harder to stick to diet goals or control your food intake when stress or other emotions come up—especially during unstructured moments like snacking.
Snack choices and amounts may be situational. Rather than being based on factors like willpower—or lack thereof—the snack choices we make, as well as the amount we eat, may somewhat depend on what’s happening at that moment. In this study, situational factors like mood played a big role in participants’ snacking behaviors.
Pay attention to your mood, not just diet rules. Instead of relying solely on strict dietary rules, these findings suggest it can help to notice how your mood influences your food choices. Recognizing patterns—like reaching for certain foods when stressed—can be a helpful first step toward building more consistent, sustainable eating habits.
Simple strategies to boost your mood may also support healthier snacking. Some of our favorites include:
- Engaging in light physical activity. Even just a few minutes of movement can shift your mindset and reduce the urge to snack impulsively.
- Trying a short, guided meditation. Taking a moment to breathe and reset can help you pause before reaching for food.
- Going for a walk outside. Fresh air and a change of scenery can lift your mood and break a stress-snacking cycle.
- Talking to a loved one. Sharing how you’re feeling can be a quick mood booster and a natural distraction from turning to an unhealthy snack.
Our Expert Take
A recent study published in Food Quality and Preference took a deep dive into the interaction between mood, diet behavior and emotion regulation on snack food consumption. While dieting is often positioned as a quick path to weight loss, this study highlights why it can be so difficult to sustain—especially when everyday emotions come into play. Rather than relying on strict diets alone, it may be more helpful to pay attention to how your mood influences your food choices, particularly during unstructured moments like snacking.
Over time, building awareness around these patterns—like reaching for certain foods when stressed or excited—can help support more consistent, sustainable eating habits. Pairing that awareness with simple, realistic strategies to manage stress and emotions may be a more effective approach than trying to rely on a restrictive diet and willpower alone.
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